There's many more on display at his site. He's also posted a few tutorials, like this one for Bouncing Boy:
And he has a few on sale, like this Batwoman, based on a painting by Hajime Sorayama:
His book, The Supergirls: Fashion, Feminism, Fantasy, and the History of Comic Book Heroines, is on sale for $11 at Amazon.
*Buy Batgirl toys at eBay.
